​​ Basic Drawing equitment...
a protractor is used to measure angels. A typical protractor is a semi-circular piece of plastic with 180 degrees printed around its curve. It is not only used in graphics but it is also used in subjects like maths

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T-Squares
are use to draw horizontal lines. They are especially useful when constructing accurate orthographic drawings or architectural drawings. A T-Square is normally used with a drawing board, set squares and clips. It must be pushed firmly against the edge of the drawing board when it is being used.
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Set Squares are used to draw accurate angles. The most common are 45 and 60/30 degrees. When using set squares they should always used along with a T-Square. The Set-square rest on the straight edge of the T-Square and this ensures when the angle is drawn that it is accurate.

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Board clips are used to hold the drawing paper in position. They simply clip on to the board holding the paper firmly against the drawing board
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A ruler is possibly one of the most important pieces of drawing equipment. Rulers should only to used to measure distances with lines being drawn with T-Squares and Set Squares. However, most people use rulers to draw straight lines. But it must be remembered that the edge of a ruler is not guaranteed to have a perfectly straight edge unlike a good T-Square or Set Square.

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